Potential Recon Activity Via Nltest.EXE

Title: Potential Recon Activity Via Nltest.EXE
Status: test
Description:Detects nltest commands that can be used for information discovery
References:
  -https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/cc731935(v=ws.11)
  -https://thedfirreport.com/2021/08/16/trickbot-leads-up-to-fake-1password-installation/
  -https://thedfirreport.com/2020/10/18/ryuk-in-5-hours/
  -https://book.hacktricks.xyz/windows/basic-cmd-for-pentesters
  -https://research.nccgroup.com/2022/08/19/back-in-black-unlocking-a-lockbit-3-0-ransomware-attack/
  -https://eqllib.readthedocs.io/en/latest/analytics/03e231a6-74bc-467a-acb1-e5676b0fb55e.html
  -https://redcanary.com/blog/how-one-hospital-thwarted-a-ryuk-ransomware-outbreak/
  -https://github.com/redcanaryco/atomic-red-team/blob/5360c9d9ffa3b25f6495f7a16e267b719eba2c37/atomics/T1482/T1482.md#atomic-test-2---windows---discover-domain-trusts-with-nltest
Author: Craig Young, oscd.community, Georg Lauenstein
Date: 2021-07-24
modified:2023-12-15
Tags:

• -'attack.discovery'
• -'attack.t1016'
• -'attack.t1482'

Logsource:

• category: process_creation
• product: windows

Detection:
  selection_nltest:
Image|endswith:'\nltest.exe' OriginalFileName:'nltestrk.exe'   selection_recon:
    - CommandLine|contains|all:
      - 'server'
      - 'query'
    - CommandLine|contains:
      - '/user'
      - 'all_trusts'
      - 'dclist:'
      - 'dnsgetdc:'
      - 'domain_trusts'
      - 'dsgetdc:'
      - 'parentdomain'
      - 'trusted_domains'
  condition:all of selection_*
Falsepositives:
  -Legitimate administration use but user and host must be investigated
Level: medium